Article(id=1153420091904479653, tenantId=1146029695717560320, journalId=1146123222451335185, issueId=1153001424821674657, articleNumber=1671-1807(2025)08-0008-08, orderNo=null, doi=null, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=research-article, receivedDate=1729612800000, receivedDateStr=2024-10-23, revisedDate=null, revisedDateStr=null, acceptedDate=null, acceptedDateStr=null, onlineDate=1752926379419, onlineDateStr=2025-07-19, pubDate=1745510400000, pubDateStr=2025-04-25, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1752926379419, onlineIssueDateStr=2025-07-19, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1752926379419, creator=13701087609, updateTime=1752926379419, updator=13701087609, issue=Issue{id=1153001424821674657, tenantId=1146029695717560320, journalId=1146123222451335185, year='2025', volume='25', issue='8', pageStart='1', pageEnd='368', issueExtLink='null', onlineDate='null', pubDate='null', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=0, createTime=1752826561408, creator=13701087609, updateTime=1763438371676, updator=13701087609, preIssue=null, nextIssue=null, ext={EN=IssueExt(id=1197510583135286126, tenantId=1146029695717560320, journalId=1146123222451335185, issueId=1153001424821674657, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1197510583135286127, tenantId=1146029695717560320, journalId=1146123222451335185, issueId=1153001424821674657, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null}, startPage=8, endPage=15, ext={EN=ArticleExt(id=1153420092273578415, articleId=1153420091904479653, tenantId=1146029695717560320, journalId=1146123222451335185, language=EN, title=Can Green Credit Promote Continuous Green Innovation in Enterprises?Causal Inference Based on Double Machine Learning, columnId=1151876674645226399, journalTitle=Science Technology and Industry, columnName=Technology Innovation, runingTitle=null, highlight=null, articleAbstract=
Under the “dual carbon” strategic goals, green credit has become an important driver for high-quality economic development and the transformation of enterprises. Based on operational data from A-share listed companies in China from 2004 to 2022, the implementation of the 2012 “Green Credit Guidelines” was used as a quasi-natural experiment. Employing double machine learning approach to construct an empirical model, the findings indicate that after the implementation of the Guidelines, the reduction of financing constraints, increased R&D investment, and promotion of joint ownership between banks and enterprises effectively drive continued green innovation in environmental protection enterprises.
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“双碳”战略目标下,绿色信贷已成为经济高质量发展和企业自身转型的重要动力。研究基于2004—2022年A股上市公司的经营数据,以2012年《绿色信贷指引》的实施作为准自然实验,采用双重机器学习方法构建实证模型,探究《绿色信贷指引》如何影响环保企业持续进行绿色创新。研究结果表明,《绿色信贷指引》实施后,通过降低融资约束、增加研发投入及促进银企共同持股,有效推动环保型企业持续进行绿色创新。
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朱子轩(2001—),男,江苏宿迁人,硕士研究生,研究方向为绿色金融、机器学习。
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朱子轩(2001—),男,江苏宿迁人,硕士研究生,研究方向为绿色金融、机器学习。
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朱子轩(2001—),男,江苏宿迁人,硕士研究生,研究方向为绿色金融、机器学习。
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2021(4): 138-155., articleTitle=金融科技与企业全要素生产率——“赋能”和信贷配给的视角, refAbstract=null)], funds=null, companyList=[AuthorCompany(id=1197612877973598433, tenantId=1146029695717560320, journalId=1146123222451335185, articleId=1153420091904479653, xref=null, ext=[AuthorCompanyExt(id=1197612877981987042, tenantId=1146029695717560320, journalId=1146123222451335185, articleId=1153420091904479653, companyId=1197612877973598433, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=Business School of Soochow University, Suzhou 215000, Jiangsu, China), AuthorCompanyExt(id=1197612877986181347, tenantId=1146029695717560320, journalId=1146123222451335185, articleId=1153420091904479653, companyId=1197612877973598433, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=苏州大学商学院, 江苏 苏州 215000)])], figs=[ArticleFig(id=1197612878862790895, tenantId=1146029695717560320, journalId=1146123222451335185, articleId=1153420091904479653, language=EN, label=null, caption=null, figureFileSmall=nWlYTJC/XM3dIgGm3HZX3g==, figureFileBig=SJF4Ti8qL9fIXhjjcUiOhg==, tableContent=null), ArticleFig(id=1197612878955065584, tenantId=1146029695717560320, journalId=1146123222451335185, articleId=1153420091904479653, language=CN, label=图1, caption=
安慰剂检验结果, figureFileSmall=nWlYTJC/XM3dIgGm3HZX3g==, figureFileBig=SJF4Ti8qL9fIXhjjcUiOhg==, tableContent=null), ArticleFig(id=1197612879022174449, tenantId=1146029695717560320, journalId=1146123222451335185, articleId=1153420091904479653, language=EN, label=null, caption=null, figureFileSmall=null, figureFileBig=null, tableContent=
| 项目 | 变量名称 | 定义 |
被解释 变量 | 企业持续绿色创新水平(Level) | 绿色专利申请量环比增长率 |
| 公众关注度(Index) | ln(1+该年百度搜索指数均值) |
| 总资产收益率(ROA) | 净利润/总资产 |
| 净资产收益率(ROE) | 净利润/平均净资产 |
机制 变量 | 融资约束(SA) | SA指数 |
| 研发费用(RD) | 企业当年研发费用比例 |
| 银企共同持股(Bank) | 企业有银行持股为1,否则为0 |
处置 变量 | 信贷政策(Event) | 当年是绿色行业为1,否则为0 |
控制 变量 | 企业规模(Size) | ln(上季度末公司总资产) |
| 企业年龄(Firmage) | ln(1+企业年龄) |
| 资产负债率(Lev) | 上季度资产负债率 |
| 现金流比率(Cashflow) | 现金流净额/总资产 |
| 应收账款占比(Rec) | 应收账款/总资产 |
| 固定资产占比(Fixed) | 固定资产/总资产 |
| 董事会规模(Board) | ln(1+董事会人数) |
| 托宾Q(Tobin Q) | 托宾Q |
| 总资产周转率(ATO) | 总营业额/总资产 |
| 审计意见(Opinion) | 标准审计意见为1,否则为0 |
| 员工人数(Employee) | ln(1+员工人数) |
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变量定义及说明
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| 项目 | 变量名称 | 定义 |
被解释 变量 | 企业持续绿色创新水平(Level) | 绿色专利申请量环比增长率 |
| 公众关注度(Index) | ln(1+该年百度搜索指数均值) |
| 总资产收益率(ROA) | 净利润/总资产 |
| 净资产收益率(ROE) | 净利润/平均净资产 |
机制 变量 | 融资约束(SA) | SA指数 |
| 研发费用(RD) | 企业当年研发费用比例 |
| 银企共同持股(Bank) | 企业有银行持股为1,否则为0 |
处置 变量 | 信贷政策(Event) | 当年是绿色行业为1,否则为0 |
控制 变量 | 企业规模(Size) | ln(上季度末公司总资产) |
| 企业年龄(Firmage) | ln(1+企业年龄) |
| 资产负债率(Lev) | 上季度资产负债率 |
| 现金流比率(Cashflow) | 现金流净额/总资产 |
| 应收账款占比(Rec) | 应收账款/总资产 |
| 固定资产占比(Fixed) | 固定资产/总资产 |
| 董事会规模(Board) | ln(1+董事会人数) |
| 托宾Q(Tobin Q) | 托宾Q |
| 总资产周转率(ATO) | 总营业额/总资产 |
| 审计意见(Opinion) | 标准审计意见为1,否则为0 |
| 员工人数(Employee) | ln(1+员工人数) |
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| 变量名称 | 观测值 | 均值 | 标准差 | 最小值 | 最大值 |
| Level | 38 460 | 7.381 | 65.374 | 0.000 | 32.782 |
| Index | 36 310 | 5.055 | 0.991 | 0.000 | 7.151 |
| ROA | 35 753 | 0.047 | 0.060 | -0.229 | 0.226 |
| ROE | 35 753 | 0.078 | 0.114 | -0.664 | 0.401 |
| Size | 39 573 | 22.120 | 1.481 | 19.384 | 27.463 |
| Firmage | 39 573 | 2.806 | 0.391 | 1.609 | 3.526 |
| Lev | 39 573 | 0.412 | 0.205 | 0.052 | 0.932 |
| Cashflow | 39 570 | 0.052 | 0.071 | -0.180 | 0.260 |
| REC | 39 177 | 0.124 | 0.102 | 0.000 | 0.469 |
| FIXED | 39 572 | 0.208 | 0.160 | 0.002 | 0.706 |
| Board | 38 757 | 2.142 | 0.209 | 1.609 | 2.708 |
| Tobin Q | 37 716 | 1.905 | 1.141 | 0.858 | 8.069 |
| ATO | 35 006 | 0.678 | 0.460 | 0.062 | 2.734 |
| Opinion | 38 805 | 0.985 | 0.122 | 0.000 | 1.000 |
| Employee | 38 734 | 7.650 | 1.270 | 4.419 | 11.248 |
| RD | 38 731 | 7.270 | 7.821 | 0.157 | 0.914 38 |
| SA | 38 805 | -3.735 | 0.290 | -4.408 | -2.799 |
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描述性统计
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| 变量名称 | 观测值 | 均值 | 标准差 | 最小值 | 最大值 |
| Level | 38 460 | 7.381 | 65.374 | 0.000 | 32.782 |
| Index | 36 310 | 5.055 | 0.991 | 0.000 | 7.151 |
| ROA | 35 753 | 0.047 | 0.060 | -0.229 | 0.226 |
| ROE | 35 753 | 0.078 | 0.114 | -0.664 | 0.401 |
| Size | 39 573 | 22.120 | 1.481 | 19.384 | 27.463 |
| Firmage | 39 573 | 2.806 | 0.391 | 1.609 | 3.526 |
| Lev | 39 573 | 0.412 | 0.205 | 0.052 | 0.932 |
| Cashflow | 39 570 | 0.052 | 0.071 | -0.180 | 0.260 |
| REC | 39 177 | 0.124 | 0.102 | 0.000 | 0.469 |
| FIXED | 39 572 | 0.208 | 0.160 | 0.002 | 0.706 |
| Board | 38 757 | 2.142 | 0.209 | 1.609 | 2.708 |
| Tobin Q | 37 716 | 1.905 | 1.141 | 0.858 | 8.069 |
| ATO | 35 006 | 0.678 | 0.460 | 0.062 | 2.734 |
| Opinion | 38 805 | 0.985 | 0.122 | 0.000 | 1.000 |
| Employee | 38 734 | 7.650 | 1.270 | 4.419 | 11.248 |
| RD | 38 731 | 7.270 | 7.821 | 0.157 | 0.914 38 |
| SA | 38 805 | -3.735 | 0.290 | -4.408 | -2.799 |
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| 变量 | (1) | (2) | (3) |
| Level | Level | Level |
| Event | 1.099** (0.448) | 1.323* (0.733) | 1.962** (0.844) |
| 控制变量一次项 | 是 | 是 | 是 |
| 控制变量二次项 | 否 | 是 | 是 |
| 时间固定效应 | 否 | 否 | 是 |
| 个体固定效应 | 否 | 否 | 是 |
| 观测值 | 29 024 | 29 024 | 29 024 |
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基准回归结果
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| 变量 | (1) | (2) | (3) |
| Level | Level | Level |
| Event | 1.099** (0.448) | 1.323* (0.733) | 1.962** (0.844) |
| 控制变量一次项 | 是 | 是 | 是 |
| 控制变量二次项 | 否 | 是 | 是 |
| 时间固定效应 | 否 | 否 | 是 |
| 个体固定效应 | 否 | 否 | 是 |
| 观测值 | 29 024 | 29 024 | 29 024 |
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| 变量 | 调整缩尾比例 | 替换被解释变量 | 剔除并行政策 | 调整样本区间 | 内生性检验 |
| (1) | (2) | (3) | (4) | (5) |
| 5%缩尾 | lnInvent | greencity | 2008—2018年 | 滞后2期 |
| Event | 1.934** (0.842) | 0.910** (0.427) | 1.999*** (0.846) | 2.469** (1.029) | 2.897 1*** (0.819) |
| 控制变量一次项 | 是 | 是 | 是 | 是 | 是 |
| 控制变量二次项 | 是 | 是 | 是 | 是 | 是 |
| 个体、年份固定 | 是 | 是 | 是 | 是 | 是 |
| 观测值 | 29 024 | 29 024 | 29 024 | 15 149 | 25 143 |
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稳健性检验
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| 变量 | 调整缩尾比例 | 替换被解释变量 | 剔除并行政策 | 调整样本区间 | 内生性检验 |
| (1) | (2) | (3) | (4) | (5) |
| 5%缩尾 | lnInvent | greencity | 2008—2018年 | 滞后2期 |
| Event | 1.934** (0.842) | 0.910** (0.427) | 1.999*** (0.846) | 2.469** (1.029) | 2.897 1*** (0.819) |
| 控制变量一次项 | 是 | 是 | 是 | 是 | 是 |
| 控制变量二次项 | 是 | 是 | 是 | 是 | 是 |
| 个体、年份固定 | 是 | 是 | 是 | 是 | 是 |
| 观测值 | 29 024 | 29 024 | 29 024 | 15 149 | 25 143 |
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| 变量 | 改变样本分割比例 | 更换机器学习方法 | 更换模型 |
| (1) | (2) | (3) | (4) | (5) | (6) | (7) |
| 1∶2 | 1∶7 | 梯度上升 | SVM | RF | 交互式模型 | DID模型 |
| Event | 1.947 (0.840) | 1.948** (0.844) | 2.118** (0.951) | 3.138** (1.693) | 2.66* (1.482) | 2.037*** (0.532) | 1.989** (0.872) |
| 控制变量一次项 | 是 | 是 | 是 | 是 | 是 | 是 | 是 |
| 控制变量二次项 | 是 | 是 | 是 | 是 | 是 | 是 | 是 |
| 个体、年份固定 | 是 | 是 | 是 | 是 | 是 | 是 | 是 |
| 观测值 | 29 024 | 29 024 | 29 024 | 29 024 | 29 024 | 29 024 | 29 024 |
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稳健性检验
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| 变量 | 改变样本分割比例 | 更换机器学习方法 | 更换模型 |
| (1) | (2) | (3) | (4) | (5) | (6) | (7) |
| 1∶2 | 1∶7 | 梯度上升 | SVM | RF | 交互式模型 | DID模型 |
| Event | 1.947 (0.840) | 1.948** (0.844) | 2.118** (0.951) | 3.138** (1.693) | 2.66* (1.482) | 2.037*** (0.532) | 1.989** (0.872) |
| 控制变量一次项 | 是 | 是 | 是 | 是 | 是 | 是 | 是 |
| 控制变量二次项 | 是 | 是 | 是 | 是 | 是 | 是 | 是 |
| 个体、年份固定 | 是 | 是 | 是 | 是 | 是 | 是 | 是 |
| 观测值 | 29 024 | 29 024 | 29 024 | 29 024 | 29 024 | 29 024 | 29 024 |
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| 变量 | (1) | (2) | (3) |
| SA | RD | Bank |
| Event | -0.549** (0.239) | 0.099* (0.059) | 0.015 (0.015) |
| 控制变量一次项 | 是 | 是 | 是 |
| 控制变量二次项 | 是 | 是 | 是 |
| 个体、时间固定 | 是 | 是 | 是 |
| 观测值 | 29 024 | 27 988 | 29 024 |
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机制分析
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| 变量 | (1) | (2) | (3) |
| SA | RD | Bank |
| Event | -0.549** (0.239) | 0.099* (0.059) | 0.015 (0.015) |
| 控制变量一次项 | 是 | 是 | 是 |
| 控制变量二次项 | 是 | 是 | 是 |
| 个体、时间固定 | 是 | 是 | 是 |
| 观测值 | 29 024 | 27 988 | 29 024 |
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| 变量 | 按行业划分 | 按地区划分 | 按产权性质划分 |
| (1) | (2) | (3) | (4) | (5) | (6) | (7) |
| 高科技 | 非高科技 | 东部 | 中部 | 西部 | 国有 | 非国有 |
| Event | 1.584 (1.058) | 2.327** (1.040) | 3.462** (1.509) | 1.253 (1.212) | 2.932** (1.443) | 2.162** (0.915) | 1.176 (1.949) |
| 控制变量一次项 | 是 | 是 | 是 | 是 | 是 | 是 | 是 |
| 控制变量二次项 | 是 | 是 | 是 | 是 | 是 | 是 | 是 |
| 个体、年份固定 | 是 | 是 | 是 | 是 | 是 | 是 | 是 |
| 观测值 | 12 279 | 16 745 | 21 272 | 3 329 | 4 418 | 11 086 | 17 322 |
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异质性分析
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| 变量 | 按行业划分 | 按地区划分 | 按产权性质划分 |
| (1) | (2) | (3) | (4) | (5) | (6) | (7) |
| 高科技 | 非高科技 | 东部 | 中部 | 西部 | 国有 | 非国有 |
| Event | 1.584 (1.058) | 2.327** (1.040) | 3.462** (1.509) | 1.253 (1.212) | 2.932** (1.443) | 2.162** (0.915) | 1.176 (1.949) |
| 控制变量一次项 | 是 | 是 | 是 | 是 | 是 | 是 | 是 |
| 控制变量二次项 | 是 | 是 | 是 | 是 | 是 | 是 | 是 |
| 个体、年份固定 | 是 | 是 | 是 | 是 | 是 | 是 | 是 |
| 观测值 | 12 279 | 16 745 | 21 272 | 3 329 | 4 418 | 11 086 | 17 322 |
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| 变量 | ROA | ROE | Index |
| Event | -0.002** (0.001 0) | | -0.004 6* (0.002 7) | | 0.139*** (0.031 0) | |
| Interact | | -0.001 1** (0.000 5) | | -0.003** (0.001 0) | | 0.034** (0.015 0) |
| 控制变量一次项 | 是 | 是 | 是 | 是 | 是 | 是 |
| 控制变量二次项 | 是 | 是 | 是 | 是 | 是 | 是 |
| 个体、年份固定 | 是 | 是 | 是 | 是 | 是 | 是 |
| 观测值 | 33 892 | 33 892 | 33 892 | 33 892 | 32 116 | 32 116 |
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《指引》的经济、社会效应
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| 变量 | ROA | ROE | Index |
| Event | -0.002** (0.001 0) | | -0.004 6* (0.002 7) | | 0.139*** (0.031 0) | |
| Interact | | -0.001 1** (0.000 5) | | -0.003** (0.001 0) | | 0.034** (0.015 0) |
| 控制变量一次项 | 是 | 是 | 是 | 是 | 是 | 是 |
| 控制变量二次项 | 是 | 是 | 是 | 是 | 是 | 是 |
| 个体、年份固定 | 是 | 是 | 是 | 是 | 是 | 是 |
| 观测值 | 33 892 | 33 892 | 33 892 | 33 892 | 32 116 | 32 116 |
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